Ozone generation device

Patent metadata

Field	Value
Publication number	US-10144643-B2
Application number	US-201515316917-A
Country	US
Kind code	B2
Filing date	Mar 13, 2015
Priority date	Jun 12, 2014
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A cylindrical tank-shaped container including: plural parallel electrode tubes; discharge tubes arranged inside the electrode tubes, each forming a discharge gap; a pair of end plates that penetrate and hold both of end sections of the plural electrode tubes; a cooling space formed by the pair of end plates and the inner surface of the tank-shaped container divided between end plates; a cooling medium inlet and a cooling medium outlet formed in opposite end sides of the cooling space; a raw material gas inlet that introduces raw material gas to be sent to the discharge gaps; and an outlet for ozone gas generated from the raw material gas by silent discharge in the discharge gaps, providing an electrode tube in which a discharge tube is not arranged, among the plural electrode tubes, that have surrounding coolant medium that reaches at least a prescribed temperature resulting from the silent discharge.

First claim

The invention claimed is:

1. An ozone generation device, comprising:
a cylindrical tank-shaped container;
a plurality of electrode tubes including dielectric discharge tubes, arranged in parallel inside the cylindrical tank-shaped container, such that the length direction of the electrode tubes follows the axial direction of the cylindrical tank-shaped container, the dielectric discharge tubes being arranged inside of the plurality of electrode tubes, each forming a discharge gap;
a pair of end plates that penetrate and hold both end sections of the plurality of electrode tubes including dielectric discharge tubes;
a cooling space formed by this pair of end plates and the inner surface of the cylindrical tank-shaped container divided between this pair of end plates;
a cooling medium inlet formed in a lower section on one end side of this cooling space;
a cooling medium outlet formed in an upper section on the other end side of this cooling space;
a raw material gas inlet provided in an end section side in the axial direction of the cylindrical tank-shaped container, the raw material gas inlet introducing a raw material gas, and the raw material gas flowing to another end side of the dielectric discharge tubes to the discharge gaps; and
an ozone gas outlet provided on the opposite side of the raw material gas inlet in the axial direction of the cylindrical tank-shaped container, being an outlet for ozone gas generated from the raw material gas by silent discharge in the discharge gaps; and
the plurality of electrode tubes including at least an electrode tube, excluding the dielectric discharge tubes, in which a dielectric discharge tube is not arranged, at least the electrode tube in which the dielectric discharge tube is not arranged is provided at a position that a temperature reaches a prescribed temperature as a result of the silent discharge in a surrounding cooling medium area.

2. The ozone generation device according to claim 1 , wherein
at least one end of the electrode tube in which the dielectric discharge tube is not arranged is closed.

3. The ozone generation device according to claim 2 , wherein
the electrode tube in which the dielectric discharge tube is not arranged is arranged at 70% to 80% height from the bottom in the height direction of the cylindrical tank-shaped container.

4. The ozone generation device according to claim 1 , wherein
the electrode tube in which the dielectric discharge tube is not arranged is arranged at 70% to 80% height from the bottom in the height direction of the cylindrical tank-shaped container.

5. The ozone generation device according to claim 1 , wherein
projections are formed on inner surfaces of the electrode tubes including the dielectric discharge tubes, and in lengths of discharge gaps formed between the dielectric discharge tubes and electrode tubes in which the dielectric discharge tube is not arranged.

6. The ozone generation device according to claim 1 , wherein
a buffer plate is arranged between the cooling medium inlet and the electrode tubes in which the dielectric discharge tube is not arranged.

7. The ozone generation device according to claim 1 , wherein
a porous plate is arranged on the cooling medium inlet, the porous plate penetrating a cooling medium which extends to a space between the pair of end plates.

8. The ozone generation device according to claim 7 , wherein
the porous plate is a plate including a plurality of pores.

9. The ozone generation device according to claim 7 , wherein
the porous plate makes a cooling medium flow in an orthogonal direction to the electrode tubes.

10. The ozone generation device according to claim 1 , wherein
a first porous plate is arranged on the cooling medium inlet and a second porous plate is arranged on the cooling medium outlet, each of the first porous plate and the second porous plate penetrating a cooling medium which extends to a space between a pair of end plates.

Assignees

• Toshiba Kk

Inventors

• Noda Kazuhiko
• Murata Takaaki
• Takahashi Ryoichi
• Kubo Kie

Classifications

• C01B2201/70

  Cooling of the discharger; Means for making cooling unnecessary · CPC title

• C01B13/11 Primary

  by electric discharge · CPC title

• C01B2201/14

  Concentric/tubular dischargers · CPC title